Hello ma am I really appreciate your concern herpes can spread from buttocks to vaginal area due to close.proximity or a poor unhygienic conditions in my opinion you should try to avoid sex until it heals completely you can clean perivaginal area with an antiseptic solution to maintain asepsis it s better to treat your partner also prophylactically for complete cure of the herpes Have plenty of fluids observe good hygiene Practice safe sex use condom avoid sex if possible Hope this addresses your question please don t hesitate to ask for further clarification I will be happy to help you Good luck